{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,4]],"date-time":"2026-04-04T09:43:25Z","timestamp":1775295805234,"version":"3.50.1"},"reference-count":20,"publisher":"FapUNIFESP (SciELO)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Braz. Dent. J."],"published-print":{"date-parts":[[2012,4]]},"abstract":"<jats:p>The aim of this study was to determine the effect of the oral environment on the corrosion of dental alloys with different compositions, using electrochemical methods. The corrosion rates were obtained from the current-potential curves and electrochemical impedance spectroscopy (EIS). The effect of artificial saliva on the corrosion of dental alloys was dependent on alloy composition. Dissolution of the ions occurred in all tested dental alloys and the results were strongly dependent on the general alloy composition. Regarding the alloys containing nickel, the Ni-Cr and Ni-Cr-Ti alloys released 0.62 mg\/L of Ni on average, while the Co-Cr dental alloy released ions between 0.01 and 0.03 mg\/L of Co and Cr, respectively.The open-circuit potential stabilized at a higher level with lower deviation (standard deviation: Ni-Cr-6Ti = 32 mV\/SCE and Co-Cr = 54 mV\/SCE). The potenciodynamic curves of the dental alloys showed that the Ni-based dental alloy with &gt;70 wt% of Ni had a similar curve and the Co-Cr dental alloy showed a low current density and hence a high resistance to corrosion compared with the Ni-based dental alloys. Some changes in microstructure were observed and this fact influenced the corrosion behavior for the alloys. The lower corrosion resistance also led to greater release of nickel ions to the medium. The quantity of Co ions released from the Co-Cr-Mo alloy was relatively small in the solutions. In addition, the quantity of Cr ions released into the artificial saliva from the Co-Cr alloy was lower than Cr release from the Ni-based dental alloys.<\/jats:p>","DOI":"10.1590\/s0103-64402012000200009","type":"journal-article","created":{"date-parts":[[2012,6,4]],"date-time":"2012-06-04T13:19:58Z","timestamp":1338815998000},"page":"141-148","source":"Crossref","is-referenced-by-count":39,"title":["Effects of chemical composition on the corrosion of dental alloys"],"prefix":"10.1590","volume":"23","author":[{"given":"Rodrigo","family":"Galo","sequence":"first","affiliation":[{"name":"University of S\u00e3o Paulo,  Brazil"}]},{"given":"Ricardo Faria","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo,  Brazil"}]},{"given":"Renata Cristina Silveira","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo,  Brazil"}]},{"given":"Lu\u00eds Augusto","family":"Rocha","sequence":"additional","affiliation":[{"name":"Minho University,  Portugal"}]},{"given":"Maria da Gl\u00f3ria Chiarello de","family":"Mattos","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo,  Brazil"}]}],"member":"530","reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"11","DOI":"10.1016\/j.biomaterials.2004.02.005","article-title":"Comparison of metal release from various metallic biomaterials in vitro","volume":"26","author":"Okazakia Y","year":"2005","journal-title":"Biomaterials","ISSN":"https:\/\/id.crossref.org\/issn\/0142-9612","issn-type":"print"},{"key":"ref2","doi-asserted-by":"crossref","first-page":"660","DOI":"10.1177\/154405910208101001","article-title":"Materials science: biological aspects","volume":"81","author":"Schmalz G","year":"2002","journal-title":"J Dent Res","ISSN":"https:\/\/id.crossref.org\/issn\/0022-0345","issn-type":"print"},{"key":"ref3","author":"Molina C"},{"key":"ref4","series-title":"Phillips\u2019 science of dental materials","author":"Anusavice KJ","year":"2003"},{"key":"ref5","doi-asserted-by":"crossref","first-page":"37","DOI":"10.14219\/jada.archive.1997.0024","article-title":"An evaluation of casting alloys used for restorative procedures","volume":"128","author":"Leinfelder KF","year":"1997","journal-title":"J Am Dent Assoc","ISSN":"https:\/\/id.crossref.org\/issn\/0002-8177","issn-type":"print"},{"issue":"7","key":"ref6","article-title":"The electrochemical behavior of various non-precious Ni and Co based alloys in artificial saliva","volume":"10","author":"Mareci D","year":"2005","journal-title":"Eur Cell Mater"},{"issue":"9","key":"ref7","doi-asserted-by":"crossref","first-page":"177","DOI":"10.1016\/0109-5641(93)90117-9","article-title":"Studies on the influence of Be content on the corrosion behavior and mechanical properties of Ni-25Cr-10Mo alloys","author":"Geis-Gerstorfer J","year":"1993","journal-title":"Dent Mater","ISSN":"https:\/\/id.crossref.org\/issn\/0109-5641","issn-type":"print"},{"key":"ref8","doi-asserted-by":"crossref","first-page":"361","DOI":"10.1111\/j.1875-595X.1999.tb00538.x","article-title":"In vitro corrosion behavior and metallic ion release of different prosthodontic alloys","volume":"49","author":"Gil FJ","year":"1999","journal-title":"Int Dent J","ISSN":"https:\/\/id.crossref.org\/issn\/0020-6539","issn-type":"print"},{"key":"ref9","first-page":"231","article-title":"Case report: ionisation tendency of a base metal alloy in the oral environment","volume":"3","author":"Kedici PS","year":"1995","journal-title":"Eur J Prosthodont Restor Dent","ISSN":"https:\/\/id.crossref.org\/issn\/0965-7452","issn-type":"print"},{"key":"ref10","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1067\/mpr.2001.113029","article-title":"Electrochemical corrosion of titanium and titanium-based alloys","volume":"85","author":"Kuphasuk C","year":"2001","journal-title":"J Prosthet Dent","ISSN":"https:\/\/id.crossref.org\/issn\/0022-3913","issn-type":"print"},{"key":"ref11","doi-asserted-by":"crossref","first-page":"4358","DOI":"10.1016\/j.biomaterials.2004.11.018","article-title":"Corrosion behavior of cobalt-chromium dental alloys doped with precious metals","volume":"26","author":"Reclaru L","year":"2005","journal-title":"Biomaterials","ISSN":"https:\/\/id.crossref.org\/issn\/0142-9612","issn-type":"print"},{"key":"ref12","first-page":"959","article-title":"Electrochemical behavior of nitinol alloy in Ringer\u2019s solution","volume":"2002","author":"Sun EX","journal-title":"J Mater Sci Mater Med"},{"key":"ref13","doi-asserted-by":"crossref","first-page":"458","DOI":"10.1002\/jbm.10080","article-title":"Effect of chemical composition on the corrosion behavior of Ni-Cr-Mo dental casting alloys","volume":"5","author":"Huang HH","year":"2002","journal-title":"J Biomed Mater Res","ISSN":"https:\/\/id.crossref.org\/issn\/0021-9304","issn-type":"print"},{"key":"ref14","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1111\/j.1365-2591.1988.tb00967.x","article-title":"Mechanisms and kinetics of metal release from dental alloys","volume":"21","author":"Brune D","year":"1988","journal-title":"Int Endod J","ISSN":"https:\/\/id.crossref.org\/issn\/0143-2885","issn-type":"print"},{"key":"ref15","doi-asserted-by":"crossref","first-page":"252","DOI":"10.1016\/0109-5641(93)90070-7","article-title":"Surface analysis of nickel-chromium dental alloys","volume":"9","author":"Bumgardner JD","year":"1993","journal-title":"Dent Mater","ISSN":"https:\/\/id.crossref.org\/issn\/0109-5641","issn-type":"print"},{"key":"ref16","doi-asserted-by":"crossref","first-page":"829","DOI":"10.1002\/jbm.a.10463","article-title":"Corrosion resistance of stressed NiTi and stainless steel orthodontic wires in acid artificial saliva","volume":"66","author":"Huang HH","year":"2003","journal-title":"J Biomed Mater Res A"},{"key":"ref17","doi-asserted-by":"crossref","first-page":"851","DOI":"10.1016\/S0142-9612(03)00606-9","article-title":"The electrochemical and mechanical behavior of passivated and TiN\/AlN-coated CoCrMo and Ti6Al4V alloys","volume":"25","author":"Goldberg JR","year":"2004","journal-title":"Biomaterials","ISSN":"https:\/\/id.crossref.org\/issn\/0142-9612","issn-type":"print"},{"key":"ref18","doi-asserted-by":"crossref","first-page":"428","DOI":"10.1111\/j.1600-051X.1989.tb01671.x","article-title":"Occupational health problems and adverse patient reactions in periodontics","volume":"16","author":"Jacobsen N","year":"1989","journal-title":"J Clin Periodontol","ISSN":"https:\/\/id.crossref.org\/issn\/0303-6979","issn-type":"print"},{"key":"ref19","doi-asserted-by":"crossref","first-page":"280","DOI":"10.1016\/0889-5406(93)70009-D","article-title":"Nickel hypersensitivity in the orthodontic patient","volume":"103","author":"Bass JK","year":"1993","journal-title":"Am J Orthod Dentofacial Orthop","ISSN":"https:\/\/id.crossref.org\/issn\/0889-5406","issn-type":"print"},{"key":"ref20","doi-asserted-by":"crossref","first-page":"1995","DOI":"10.1016\/S0142-9612(01)00328-3","article-title":"Influence of fluoride content and pH on the corrosion resistance of titanium and its alloys","volume":"23","author":"Schiff N","year":"2002","journal-title":"Biomaterials","ISSN":"https:\/\/id.crossref.org\/issn\/0142-9612","issn-type":"print"}],"container-title":["Brazilian Dental Journal"],"original-title":[],"link":[{"URL":"http:\/\/www.scielo.br\/pdf\/bdj\/v23n2\/v23n02a09.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2017,5,27]],"date-time":"2017-05-27T06:11:56Z","timestamp":1495865516000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_arttext&pid=S0103-64402012000200009&lng=en&tlng=en"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,4]]},"references-count":20,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2012,4]]}},"alternative-id":["S0103-64402012000200009"],"URL":"https:\/\/doi.org\/10.1590\/s0103-64402012000200009","relation":{},"ISSN":["0103-6440"],"issn-type":[{"value":"0103-6440","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012,4]]}}}